FIXED AMMUNITION Russian patent published in 1997 - IPC

FIELD: ammunition, mainly for artillery rifled automatic weapon. SUBSTANCE: fixed ammunition has a shell with the guide device and a shell case with the propellant charge and ignition means. The guide device is made in the form of at least one shoulder of polyacrylated composition with an addition of fluoroplastic within 1 to 2 mass percent. The shoulders are partially placed in an annular groove made on the shell center bulb. The depth of the annular groove equals 0.05 to 0.07 of the shell caliber, and its width exceeds its depth by 3 to 5 times. The shoulder is formed by die casting. The shell case is installed close to the center bulb. A coating of easily sublimable metal (zinc, cadmium) or its compound is applied onto the inner surface of the shell case. EFFECT: improved design. 7 cl, 2 dwg